Published in Scientific Papers. Series B. Horticulture., Vol. LVII
Written by Maria IORDACHE
Biological characteristics of pollen formation and development are dependent on weather conditions in the winter and early spring thermal stabilization. In the last years, the.. weather disturbances manifested by late frosts, affected, mainly, physiological processes in mature pollen, which occurred by the reducing pollen germination capacity both as a percentage and also the development in terms of development in length (LPT) of the pollen tube. It were used specific methods Carnoy fixation for high lighting the microsporogenesis stages and the germination on liquid medium in order to selection optimal variants for the maximum potentialities of the pollen biological value. The work has been done on Romanian varieties of sweet cherry with different periods of ripening: Boambe de Cotnari, Severin, Daria, from Research & Development Station for Pomiculture Baneasa orchards. We observed a normal evolution at the anthers an the trades level of microspores, consisting a good premise for the germinative manifestation capacity of the pollen. In vitro conditions of the developmentdynamics of the pollinic tube varied from 18% at 45% as dominant values. In conclusionwe was considered germinated pollen all the granulates that had pollinic tubes length approximately equal with double the diameter pollen. .. ..
[Read full article] [Citation]
cherry
